2022-01-01 18:54:23 +00:00
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/* Copyright (C) 1998-2022 Free Software Foundation, Inc.
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1998-01-26 22:04:53 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 04:56:23 +00:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1998-01-26 22:04:53 +00:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 04:56:23 +00:00
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Lesser General Public License for more details.
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1998-01-26 22:04:53 +00:00
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2001-07-06 04:56:23 +00:00
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You should have received a copy of the GNU Lesser General Public
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2012-03-09 23:56:38 +00:00
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License along with the GNU C Library. If not, see
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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1998-02-17 15:26:57 +00:00
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1998-01-26 22:04:53 +00:00
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#include <sysdep.h>
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1998-02-17 15:26:57 +00:00
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2003-06-06 05:54:15 +00:00
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/* To enable unwinding through the signal frame without special hackery
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elsewhere, describe the entire struct sigcontext with unwind info.
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2004-01-16 04:59:55 +00:00
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In order to minimize the size of the encoding, we set the CFA to the
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end of the sigcontext, which makes all of the registers have small
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negative offsets from that. */
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2003-06-06 05:54:15 +00:00
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.macro SIGCONTEXT_REGS_I base, from=0
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cfi_offset (\from, \base + (4 + \from) * 8)
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.if 30-\from
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SIGCONTEXT_REGS_I \base, "(\from+1)"
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.endif
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.endm
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1998-01-26 22:04:53 +00:00
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2003-06-06 05:54:15 +00:00
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.macro SIGCONTEXT_REGS_F base, from=32
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cfi_offset (\from, \base + (4 + 1 + \from) * 8)
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.if 62-\from
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SIGCONTEXT_REGS_F \base, "(\from+1)"
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.endif
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.endm
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.macro SIGCONTEXT_REGS base
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SIGCONTEXT_REGS_I \base
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SIGCONTEXT_REGS_F \base
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cfi_offset (63, \base + (4 + 32 + 1 + 32) * 8)
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cfi_offset (64, \base + 2 * 8)
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.endm
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cfi_startproc
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cfi_return_column (64)
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2012-06-05 15:12:03 +00:00
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.cfi_signal_frame
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2003-06-06 05:54:15 +00:00
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SIGCONTEXT_REGS -648
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cfi_def_cfa_offset (648)
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2013-11-15 20:34:39 +00:00
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/* While this frame is marked as a signal frame, that only applies
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to how this return address is handled for the outer frame.
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The return address that arrived here, from the inner frame, is
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not marked as a signal frame and so the unwinder still tries to
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subtract 1 to examine the presumed call insn. Thus we must
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extend the unwind info to a nop before the start. */
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nop
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.align 4
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2004-01-16 04:59:55 +00:00
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__syscall_sigreturn:
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2003-06-06 05:54:15 +00:00
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mov sp, a0
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ldi v0, __NR_sigreturn
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1998-01-26 22:04:53 +00:00
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callsys
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2004-01-16 04:59:55 +00:00
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.size __syscall_sigreturn, .-__syscall_sigreturn
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.type __syscall_sigreturn, @function
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alpha: Use Linux generic sigaction implementation
Alpha rt_sigaction syscall uses a slight different kernel ABI than
generic one:
arch/alpha/kernel/signal.c
90 SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
91 struct sigaction __user *, oact,
92 size_t, sigsetsize, void __user *, restorer)
Similar as sparc, the syscall expects a restorer function. However
different than sparc, alpha defines the restorer as the 5th argument
(sparc defines as the 4th).
This patch removes the arch-specific alpha sigaction implementation,
adapt the Linux generic one to different restore placements (through
STUB macro), and make alpha use the Linux generic kernel_sigaction
definition.
Checked on alpha-linux-gnu and x86_64-linux-gnu (for sanity).
* sysdeps/unix/sysv/linux/alpha/Makefile: Update comment about
__syscall_rt_sigaction.
* sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h
(kernel_sigaction): Use Linux generic defintion.
(STUB): Define.
(__syscall_rt_sigreturn, __syscall_sigreturn): Add prototype.
* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S
(__syscall_rt_sigaction): Remove implementation.
(__syscall_sigreturn, __syscall_rt_sigreturn): Define as global and
hidden.
* sysdeps/unix/sysv/linux/alpha/sigaction.c: Remove file.
* sysdeps/unix/sysv/linux/alpha/sysdep.h (INLINE_SYSCALL,
INTERNAL_SYSCALL): Remove definitions.
* sysdeps/unix/sysv/linux/sigaction.c: Define STUB to accept both the
action and signal set size.
* sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c (STUB): Redefine.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (STUB): Likewise.
2018-12-11 18:57:49 +00:00
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.global __syscall_sigreturn;
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.hidden __syscall_sigreturn;
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1998-01-26 22:04:53 +00:00
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2013-11-15 20:34:39 +00:00
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/* See above wrt including the nop. */
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2003-06-06 05:54:15 +00:00
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cfi_def_cfa_offset (176 + 648)
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2013-11-15 20:34:39 +00:00
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nop
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.align 4
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2004-01-16 04:59:55 +00:00
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__syscall_rt_sigreturn:
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1998-01-26 22:04:53 +00:00
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mov sp,a0
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ldi v0,__NR_rt_sigreturn
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callsys
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2004-01-16 04:59:55 +00:00
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.size __syscall_rt_sigreturn, .-__syscall_rt_sigreturn
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.type __syscall_rt_sigreturn, @function
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alpha: Use Linux generic sigaction implementation
Alpha rt_sigaction syscall uses a slight different kernel ABI than
generic one:
arch/alpha/kernel/signal.c
90 SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
91 struct sigaction __user *, oact,
92 size_t, sigsetsize, void __user *, restorer)
Similar as sparc, the syscall expects a restorer function. However
different than sparc, alpha defines the restorer as the 5th argument
(sparc defines as the 4th).
This patch removes the arch-specific alpha sigaction implementation,
adapt the Linux generic one to different restore placements (through
STUB macro), and make alpha use the Linux generic kernel_sigaction
definition.
Checked on alpha-linux-gnu and x86_64-linux-gnu (for sanity).
* sysdeps/unix/sysv/linux/alpha/Makefile: Update comment about
__syscall_rt_sigaction.
* sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h
(kernel_sigaction): Use Linux generic defintion.
(STUB): Define.
(__syscall_rt_sigreturn, __syscall_sigreturn): Add prototype.
* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S
(__syscall_rt_sigaction): Remove implementation.
(__syscall_sigreturn, __syscall_rt_sigreturn): Define as global and
hidden.
* sysdeps/unix/sysv/linux/alpha/sigaction.c: Remove file.
* sysdeps/unix/sysv/linux/alpha/sysdep.h (INLINE_SYSCALL,
INTERNAL_SYSCALL): Remove definitions.
* sysdeps/unix/sysv/linux/sigaction.c: Define STUB to accept both the
action and signal set size.
* sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c (STUB): Redefine.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (STUB): Likewise.
2018-12-11 18:57:49 +00:00
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.global __syscall_rt_sigreturn;
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.hidden __syscall_rt_sigreturn;
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2003-06-06 05:54:15 +00:00
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2004-01-16 04:59:55 +00:00
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cfi_endproc
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